
\usepackage{threeparttable}

\begin{table}
\caption{Treatment effects on support for non-citizen local voting rights in Study 2}
\begin{center}
\begin{threeparttable}
\begin{tabular}{l c c c c c c c c}
\hline
 & \multicolumn{1}{c}{vote US} & \multicolumn{1}{c}{vote own} & \multicolumn{1}{c}{gov dec} & \multicolumn{1}{c}{more info} & \multicolumn{1}{c}{vote US} & \multicolumn{1}{c}{vote own} & \multicolumn{1}{c}{gov dec} & \multicolumn{1}{c}{more info} \\
\cline{2-2} \cline{3-3} \cline{4-4} \cline{5-5} \cline{6-6} \cline{7-7} \cline{8-8} \cline{9-9}
 & (1) & (2) & (3) & (4) & (5) & (6) & (7) & (8) \\
\hline
control            & $2.826^{*}$         & $2.862^{*}$         & $2.855^{*}$         & $0.407^{*}$         & $1.828^{*}$         & $1.859^{*}$         & $1.921^{*}$         & $0.034$             \\
                   & $ [ 2.736;  2.916]$ & $ [ 2.772;  2.951]$ & $ [ 2.765;  2.945]$ & $ [ 0.379;  0.435]$ & $ [ 1.578;  2.077]$ & $ [ 1.607;  2.110]$ & $ [ 1.670;  2.173]$ & $ [-0.057;  0.124]$ \\
co-partisan        & $0.211^{*}$         & $0.210^{*}$         & $0.257^{*}$         & $-0.005$            & $0.220^{*}$         & $0.219^{*}$         & $0.266^{*}$         & $0.001$             \\
                   & $ [ 0.087;  0.334]$ & $ [ 0.087;  0.333]$ & $ [ 0.133;  0.381]$ & $ [-0.045;  0.034]$ & $ [ 0.121;  0.319]$ & $ [ 0.120;  0.319]$ & $ [ 0.167;  0.365]$ & $ [-0.037;  0.039]$ \\
counter-partisan   & $-0.459^{*}$        & $-0.464^{*}$        & $-0.446^{*}$        & $-0.040^{*}$        & $-0.415^{*}$        & $-0.420^{*}$        & $-0.402^{*}$        & $-0.033$            \\
                   & $ [-0.581; -0.337]$ & $ [-0.586; -0.342]$ & $ [-0.569; -0.323]$ & $ [-0.080; -0.001]$ & $ [-0.513; -0.317]$ & $ [-0.518; -0.321]$ & $ [-0.501; -0.303]$ & $ [-0.071;  0.005]$ \\
college            &                     &                     &                     &                     & $0.048$             & $0.072$             & $0.047$             & $0.050^{*}$         \\
                   &                     &                     &                     &                     & $ [-0.035;  0.130]$ & $ [-0.011;  0.155]$ & $ [-0.036;  0.131]$ & $ [ 0.018;  0.082]$ \\
male               &                     &                     &                     &                     & $-0.023$            & $-0.024$            & $-0.030$            & $-0.026$            \\
                   &                     &                     &                     &                     & $ [-0.104;  0.059]$ & $ [-0.106;  0.058]$ & $ [-0.112;  0.052]$ & $ [-0.057;  0.006]$ \\
white              &                     &                     &                     &                     & $-0.103$            & $-0.093$            & $-0.107$            & $-0.021$            \\
                   &                     &                     &                     &                     & $ [-0.212;  0.005]$ & $ [-0.199;  0.014]$ & $ [-0.216;  0.002]$ & $ [-0.063;  0.020]$ \\
latino             &                     &                     &                     &                     & $0.203^{*}$         & $0.168^{*}$         & $0.172^{*}$         & $0.058^{*}$         \\
                   &                     &                     &                     &                     & $ [ 0.058;  0.347]$ & $ [ 0.024;  0.313]$ & $ [ 0.029;  0.316]$ & $ [ 0.002;  0.115]$ \\
republican         &                     &                     &                     &                     & $-0.985^{*}$        & $-0.911^{*}$        & $-0.963^{*}$        & $-0.110^{*}$        \\
                   &                     &                     &                     &                     & $ [-1.088; -0.882]$ & $ [-1.015; -0.808]$ & $ [-1.067; -0.860]$ & $ [-0.147; -0.073]$ \\
strong partisan    &                     &                     &                     &                     & $0.049$             & $0.007$             & $0.033$             & $-0.009$            \\
                   &                     &                     &                     &                     & $ [-0.036;  0.134]$ & $ [-0.078;  0.093]$ & $ [-0.052;  0.118]$ & $ [-0.042;  0.024]$ \\
employed           &                     &                     &                     &                     & $0.163^{*}$         & $0.133^{*}$         & $0.131^{*}$         & $0.011$             \\
                   &                     &                     &                     &                     & $ [ 0.079;  0.247]$ & $ [ 0.049;  0.217]$ & $ [ 0.046;  0.216]$ & $ [-0.021;  0.043]$ \\
married/partner    &                     &                     &                     &                     & $-0.027$            & $-0.058$            & $-0.018$            & $0.018$             \\
                   &                     &                     &                     &                     & $ [-0.111;  0.056]$ & $ [-0.142;  0.027]$ & $ [-0.103;  0.067]$ & $ [-0.014;  0.050]$ \\
attitudes migrants &                     &                     &                     &                     & $0.364^{*}$         & $0.383^{*}$         & $0.379^{*}$         & $0.038^{*}$         \\
                   &                     &                     &                     &                     & $ [ 0.328;  0.401]$ & $ [ 0.346;  0.419]$ & $ [ 0.343;  0.416]$ & $ [ 0.025;  0.051]$ \\
native born        &                     &                     &                     &                     & $0.104$             & $0.053$             & $0.044$             & $-0.017$            \\
                   &                     &                     &                     &                     & $ [-0.029;  0.236]$ & $ [-0.082;  0.188]$ & $ [-0.090;  0.178]$ & $ [-0.068;  0.033]$ \\
interest politics  &                     &                     &                     &                     & $0.069^{*}$         & $0.070^{*}$         & $0.061^{*}$         & $0.084^{*}$         \\
                   &                     &                     &                     &                     & $ [ 0.030;  0.109]$ & $ [ 0.030;  0.110]$ & $ [ 0.021;  0.101]$ & $ [ 0.070;  0.098]$ \\
\hline
cov                & no                  & no                  & no                  & no                  & yes                 & yes                 & yes                 & yes                 \\
Adj. R$^2$         & $0.032$             & $0.033$             & $0.035$             & $0.001$             & $0.363$             & $0.355$             & $0.363$             & $0.084$             \\
Num. obs.          & $3569$              & $3568$              & $3569$              & $3505$              & $3569$              & $3568$              & $3569$              & $3505$              \\
\hline
\end{tabular}
\begin{tablenotes}[flushleft]
\scriptsize{\item Presents estimates of average treatment effects and heteroskedasticity-consistent 95% CIs without and with covariate adjustment for Study 2. The sample includes Democratic and Republican registered voters who answered covariate and outcome questions. 
 $^*$ Null hypothesis value outside the confidence interval.}
\end{tablenotes}
\end{threeparttable}
\label{table:ols_study2}
\end{center}
\end{table}
